It is a great topic! On my end :
- Availability of ingredients in my area (London or Paris, which are quite international, but sometimes there are ingredients (mostly Asian, but can also be American) I cannot find easily in either countries...)... Or if it calls for ingredients I find too confidential, weird, or hard to find, such as lecithin or liquid glucose or .. (for me, I mean obviously this will be very different from another country or person point of view, I will find Maroilles cheese, Espelette pepper or Cadbury fingers/eggs/whatever acceptable, and not Old Bay seasoning, because I have not found it in the UK or France yet - sad that I know)
- Feasibility of techniques
- Grams or liters measurements please (or at least equivalences, or some kind of weight measures like ounces... )
- I hate the gluten free/vegan/health trend thing, I know it is just me, but it just irks me, I would not buy a book like this. As a matter of fact I have one (something about glow, ... ) and all recipes I have tried do not work for me at all, the assembly of ingredients is odd, does not work together, and is more style than substance in a whole lot of ways. If I have to cook for someone with a real food intolerance or allergies, I will just adapt a recipe or choose one off hand.
- Slopiness in writing, quality of photographs, lack of general appeal
- Written by non chef, or someone with no food experience (cooking for a family for 25 years do qualify as experience in my book though) - would especially avoid social media star, journalists, etc. with no food experience